Filter by
Military Specification
Specifications Met
Fastener Head Type
Threading
Finish
Socket Head Profile
Drive Style
Material
Tensile Strength
System of Measurement
Thread Spacing
Thread Fit
Thread Type
Thread Direction
Hardness
Export Control Classification Number (ECCN)
DFARS Specialty Metals
About Socket Head Screws
More
Mil. Spec. Alloy Steel Socket Head Screws
Fully Threaded
Partially Threaded
Choose these screws for their adherence to strict military standards for material and construction. With a tensile strength of 160,000 psi, these alloy steel screws are stronger than Grade 8 steel screws. They're cadmium plated to resist corrosion in wet environments. Length is measured from under the head.
Fine threads are closely spaced to prevent loosening from vibration. They are not compatible with coarse threads.
Head | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Threading | Min. Thread Lg. | Thread Spacing  | Dia. | Ht. | Drive Size | Tensile Strength, psi | Specifications Met | Each | |
Cadmium-Plated Alloy Steel | ||||||||||
10-32 | ||||||||||
| 3/8" | Fully Threaded | __ | Fine | 5/16" | 0.19" | 5/32" | 160,000 | MS16998-26, NAS1351-3-6P | 000000000 | 00000 |
| 1/2" | Fully Threaded | __ | Fine | 5/16" | 0.19" | 5/32" | 160,000 | MS16998-27, NAS1351-3-8P | 000000000 | 0000 |
| 5/8" | Fully Threaded | __ | Fine | 5/16" | 0.19" | 5/32" | 160,000 | MS16998-28, NAS1351-3-10P | 000000000 | 0000 |
| 3/4" | Fully Threaded | __ | Fine | 5/16" | 0.19" | 5/32" | 160,000 | MS16998-29, NAS1351-3-12P | 000000000 | 0000 |
| 7/8" | Fully Threaded | __ | Fine | 5/16" | 0.19" | 5/32" | 160,000 | MS16998-30, NAS1351-3-14P | 000000000 | 0000 |
| 1" | Fully Threaded | __ | Fine | 5/16" | 0.19" | 5/32" | 160,000 | MS16998-31, NAS1351-3-16P | 000000000 | 0000 |
| 1 1/4" | Partially Threaded | 7/8" | Fine | 5/16" | 0.19" | 5/32" | 160,000 | MS16998-32, NAS1351-3-20P | 000000000 | 0000 |
| 1 1/2" | Partially Threaded | 1 1/8" | Fine | 5/16" | 0.19" | 5/32" | 160,000 | MS16998-33, NAS1351-3-24P | 000000000 | 0000 |
| 1 3/4" | Partially Threaded | 7/8" | Fine | 5/16" | 0.19" | 5/32" | 160,000 | MS16998-34, NAS1351-3-28P | 000000000 | 0000 |
| 2" | Partially Threaded | 1 1/8" | Fine | 5/16" | 0.19" | 5/32" | 160,000 | MS16998-35, NAS1351-3-32P | 000000000 | 0000 |
1/4"-28 | ||||||||||
| 1/2" | Fully Threaded | __ | Fine | 3/8" | 1/4" | 3/16" | 160,000 | MS16998-41, NAS1351-4-8P | 000000000 | 0000 |
| 5/8" | Fully Threaded | __ | Fine | 3/8" | 1/4" | 3/16" | 160,000 | MS16998-42, NAS1351-4-10P | 000000000 | 0000 |
| 3/4" | Fully Threaded | __ | Fine | 3/8" | 1/4" | 3/16" | 160,000 | MS16998-43, NAS1351-4-12P | 000000000 | 0000 |
| 7/8" | Fully Threaded | __ | Fine | 3/8" | 1/4" | 3/16" | 160,000 | MS16998-44, NAS1351-4-14P | 000000000 | 0000 |
| 1" | Fully Threaded | __ | Fine | 3/8" | 1/4" | 3/16" | 160,000 | MS16998-45, NAS1351-4-16P | 000000000 | 0000 |
| 1 1/4" | Fully Threaded | __ | Fine | 3/8" | 1/4" | 3/16" | 160,000 | MS16998-46, NAS1351-4-20P | 000000000 | 0000 |
| 1 1/2" | Partially Threaded | 1" | Fine | 3/8" | 1/4" | 3/16" | 160,000 | MS16998-47, NAS1351-4-24P | 000000000 | 0000 |
| 1 3/4" | Partially Threaded | 1 1/4" | Fine | 3/8" | 1/4" | 3/16" | 160,000 | MS16998-48, NAS1351-4-28P | 000000000 | 0000 |
| 2" | Partially Threaded | 1" | Fine | 3/8" | 1/4" | 3/16" | 160,000 | MS16998-49, NAS1351-4-32P | 000000000 | 0000 |
| 2 1/4" | Partially Threaded | 1 1/4" | Fine | 3/8" | 1/4" | 3/16" | 160,000 | MS16998-50, NAS1351-4-36P | 000000000 | 0000 |